TV and film would have us believe that nobody in the 19th century wore a cap aside from maids. Which is a lot of people, but they’re not the ones getting screen time, sadly.
I get it. By today’s standards, caps are frumpy and unsexy. Directors don’t want to hide actors’ faces, and costume designers don’t want to ruin the effect of an elegant gown by plopping something that looks like half a chef’s hat on top.